Carrier Aggregation Parameter Configuration Method, Device, and System

2. The method according to claim 1, wherein the third control signaling further comprises an indication field, and the indication field is used to indicate whether the target carrier aggregation parameter has been reconfigured.

12. A device, wherein the device is a second device, and the second device comprises a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, steps of the carrier aggregation parameter configuration method according to claim 4 are implemented.

19. The device according to claim 18, wherein the third control signaling further comprises an indication field, and the indication field is used to indicate whether the target carrier aggregation parameter has been reconfigured.